Tensioning device for spooling-machines.



A. MAYNARD.

TENSIONING DEVICE FOR SPOOLING MACHINES.

APPLICATION FILED MAY 15. 1918.

1,283,251. Patented Oct. 29, 1918.

Qwueutoz filberz Maynard ALBERT MAYNARD, 0F SUN COOK, NEW HAMPSHIRE.

TENSION ING DEVICE FOR SPO0LING-1VIACHINES[ Application filed May 15, 1918.

To all whom it may concern:

Be it known that I, ALBERT MAYNARD, a

citizen of the United States, residing at Suncook, in the county of Merrimack and State of New Hampshire, have invented certain new and useful Improvements in Tensioning Devices for Spooling-Machines, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to spooling or windmg machines, and particularly to means whereby the yarn is tensioned as it passes from the cop or bobbin to the spool on which the yarn is being wound.

The general object of the invention is to provide improved means for tensioning the yarn in its passage and particularly to provide means engaging the bobbin spindle and acting as a brake thereon whereby to maintain the tension of the yarn.

A further object is to provide tensioning means of this character so constructed that the tension may be adjusted very simply and easily.

Still another object is to provide a construction of this character which is adapted to be used with many different forms of spoolers.

Other objects will appear in the course of the following description.

. My invention is illustrated in the accompanying drawings, wherein:

Figure l is a side elevation of mechanism for rewinding ply yarn, parts of the mechanism being in section and the figures showing my improved tensioning device applied thereto; and

Fig. 2 is a section on the line 22 of Fig. 1.

Referring to these drawings, 10 designates a warper spool of any suitable construction and rotated in any suitable manner and mounted, of course, in a suitable frame. Disposed adjacent to the spool 10 is the longitudinally extending supporting rod 11, this rod 11' being operatively connected to the frame of the machine in any suitable manner. Extending transversely of the warper spool is the longitudinally extending guide rod 12 having thereon any suitable thread guiding mechanism, designated generally 13, this mechanism forming no part of my invention. 7 The rod 12 is vertically reciprocated in the usual manner to guide the yarn onto the warper spool.

Mounted upon the supporting rod 11 is a Specification of Letters Patent.

which bears against Patented Oct. 29, 1918. Serial No. 234,651.

bracket let, this bracket at its lower end being provided with the semi-circular open socket 15 to engage the rod 11 and being held thereto by the set screw 16. The bracket is formed with downwardly and outwardly projecting bearings 17 and 18, wherein is disposed the upwardly and outwardly extending spindle 19. This spindle, above the bearing 18, carries upon it the head 20, havmg a transversely extending rib 21 adapted to engage in a transversely extending slot formed in the head of a twister spool 22. The spindle 19 is prevented from vertical movement or longitudinal movement within the bearings 18 and 17 by means of the collar 23 which bears against the lower face of the bearing 18.

Mounted upon the bearing 18 is a bifurcated bracket 24 which is illustrated as prov1ded with a screw-tln'eaded stud having screw-threaded engagement with the wall of the bearing 18 and mounted in this bifurcated bracket 24 is a lever 25, the lever being unequally pivoted so as to have its short arm extending upward. The short arm carries upon it the semicircular brake 26, whose inner face is lined with leather or like material and which bears against the face 27 of the head 20 and checks, as a consequence, the rotation of the shaft 19 and of the spindle or twister spool 22 carried thereby. The lower end of the lever 25 carries upon it an adjustable weight 28 held in adjusted position upon the lever by means of the set screw 29. Inasmuch as the lever is inclined upward and outward, it is obvious that the Weight will tend to press the brake 26 against the face 27 of the head 21 and that the strength with which this brake bears net the head will depend upon the position of the weight 28. If the weight 28 is disposed close to the fulcrum bracket 24 it will exert relatively slight force and the farther away the weight is disposed, the stronger will be the braking pressure against the face 27 of the head 20.

With this construction tension on the yarn is secured, not by any arm or other device the yarn itself, but by a brake yieldingly bearing against the spindle upon which the spool or bobbin is mounted and by shifting the weight along the lever the degree of braking pressure may be very delicately and easily regulated. Furthermore, the lever bears with exactly the same force on the spindle whether the bobbin or spool be full or nearly empty and there is nothing in my device Which interferes, in any Way, with the ready removal of an empty spool and the replacement of a full spool thereon. It will be seen that the collar 23 prevents any reciprocation of the spindle 19 which would interfere with the bearinpof the brake member 26 upon the face 27 or the head 20.

While I have illustrated the mechanism to which my attachment is to be applied, it will be understood that this mechanism may be of any ordinary or conventional form.

Having described my invention, what I claim is:

A yarn tensioning device for spooling machines comprising a bracket having upper and lower bearings, a spool supporting spindle rotatably mounted in the bracket and ex- Gopies of this patent may be obtained for tending upward and outward at an inclination to the vertical and having a spool supporting head, a bracket mounted upon one of said bearings, a lever pivotally supported upon the bracket and extending approximately parallel to the spindle, a brake pivotally connected to the upper end of the lever and bearing against said head to impede its rotation, and a weight longitudinally adjustable upon that portion of the lever below the fulcrum whereby to increase or decrease the pressure of said brake on the head.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

ALBERT MAYNARD.

Witnesses ROMEO LAroRTn, An'ronsn'rrn LALIBERTE.

Washington, D. 0. 

